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During extraction of silver from cyanide...

During extraction of silver from cyanide process , which of the following is formed ?

A

`Na[Ag(CN)_2]`

B

`Na_2[Ag(CH)_2]`

C

`Na_4[Ag(CN)_2]`

D

None of these

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the extraction of silver from the cyanide process, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Ore**: The primary ore of silver is silver sulfide (Ag2S). 2. **Cyanide Process**: In the cyanide process, silver sulfide is treated with sodium cyanide (NaCN). The reaction can be represented as: \[ \text{Ag}_2\text{S} + 4 \text{NaCN} \rightarrow 2 \text{NaAgCN}_2 + \text{Na}_2\text{S} \] Here, sodium argentocyanide (NaAgCN2) is formed along with sodium sulfide (Na2S). 3. **Further Reaction**: The sodium argentocyanide formed can further react with zinc (Zn) to extract silver: \[ 2 \text{NaAgCN}_2 + \text{Zn} \rightarrow \text{Na}_2\text{Zn(CN)}_4 + 2 \text{Ag} \] This reaction results in the formation of soluble sodium zinc cyanide and precipitates silver. 4. **Conclusion**: From the above reactions, we can conclude that during the extraction of silver using the cyanide process, sodium argentocyanide (NaAgCN2) is formed. 5. **Final Answer**: Therefore, the correct answer to the question is that sodium argentocyanide (NaAgCN2) is formed during the extraction of silver from the cyanide process.
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